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Round Diamond Engagement Rings

Drawing together timeless design with modern artistry, our collection of round diamond engagement rings offers you an exciting selection of unique rings, allowing you to find a design that speaks to love you share with your partner. Certain styles determine the overall silhouette and impact of your engagement ring, so take time to consider if a solitaire, pavé, halo, or trilogy design is the one for you. Best known for their brightness and brilliance, a round diamond is a time-honoured diamond shape for an engagement ring as its versatile circular shape suits all styles and metals. Our designers draw creative inspiration from all over to bring you a diverse range of round diamond engagement rings, so explore our full selection of design styles below.


See a round diamond engagement ring on hand

Whether you prefer a delicate  one carat round diamond ring, a  two carat round diamond beauty or a bolder three carat masterpiece, round engagement rings showcase the versatility of this classic design, making them a popular choice for romantic milestones. Play around with our carat weight widget below to see how different carat weights look in different shapes and styles on hand.

Stone shape1 carat2 carat3 carat
Round6.4 x 6.4mm8.1 x 8.1mm9.4 x 9.4mm
Princess5.5 x 5.5mm7.3 x 7.3mm8.6 x 8.6mm
Emerald7 x 5mm8.5 x 6.5mm10 x 7mm
Asscher5.5 x 5.5mm7 x 7mm8 x 8mm
Oval8 x 5.5mm10 x 7mm11 x 8mm
Marquise10 x 5mm12 x 6mm14 x 7mm
Pear8 x 5.5mm10 x 7mm12 x 8mm
Heart6.5 x 6.5mm8.5 x 8.5mm10 x 10mm
Cushion6.5 x 6.5mm8 x 8mm9.5 x 9.5mm

How does diamond carat weight impact round engagement ring price?

Because larger diamonds are more rare, the heavier the diamond, the higher the price. For example, a 1 carat round diamond would be valued higher than two 0.50 carat round diamonds of the same quality. In general, a doubling the size of your diamond can cost three to four times more.

Highly sought-after round diamond sizes can also carry a price premium. If you’re after a 1, 1.5 or 2 carat etc. we recommend buying just shy of these carat weights, which can result in savings.

You can often save around 10% by choosing a diamond that is around 0.10cts lower than the popular sizes. They’ll appear almost identical in size but won’t carry the same price tag. – Nikolay Piriankov, CEO at Taylor & Hart

Expert Advice: How to choose the perfect round diamond?

Just because a diamond is bigger, doesn’t mean it’s better. The right diamond isn’t just based on one factor but a combination of all 4 Cs (carat, cut, clarity and colour). When choosing a diamond, focus on the quality that’s most important to you, then work to balance the remaining three.

Diamond Colour:

If you are looking at a white gold or platinum band, we would recommend colour grades of G-H. Opt for a colour grade between D (colourless) and G (near-colourless) for a mesmerising icy white diamond without unnecessary cost. If you are looking at a rose gold or yellow gold band, we would recommend a diamond with a colour range of G-J. The warm tones of the metal will offset any hints of colour in the diamond. The most frequent diamond colour we see amongst our customers is F. This is closely followed by E and G.

For the best overall value, a G-H diamond from the near colourless category is a great choice. The visible difference between these grades and grades in the colourless category is minor, but you could make huge savings. – Kate Earlam-Charnley, Design Director at Taylor & Hart

Diamond Clarity:

To be sure that your diamond can display its full fire and brilliance, we would recommend a SI1 clarity grade or higher. Aim for clarity grades like VS1 or VS2 (Very Slightly Included) for diamonds with minimal visible flaws to the naked eye. The most popular diamond clarity grade we see amongst our customers is VS1, closely followed by VVS2.

VS clarity grade diamonds offer the best value. They cost less than flawless diamonds, but still appear totally eye-clean, with great light performance and bright sparkle. – Alessandra Ranaglia, Head of Supply Chain at Taylor & Hart

Diamond Cut:

A diamond cut grade is only applicable to round shaped diamonds and affects how the diamond catches light and sparkles. Look for Excellent or Ideal cut grades for maximum brilliance.

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